njm2370 ver.2004-08-30 -1- low dropout voltage regulator with on/off control general description package outline the njm2370 is a low dropout voltage regulator with on/off control. it features dropout voltage of 0.1v at io=30ma, low output noise and high ripple rejection by connecting an external capaciter to noise bypass terminal. it?s suitable for portable items such as cellular phones, video camera and others. features output current (150ma min. (vo-0.3v)) low dropout voltage (0.1v typ. (io=30ma)) external capaciter for noise bypass on/off control function over current limit thermal shutdown bipolar technology package outline sot-89(5pin), vsp8, tvsp-8 pin configuration njm2370u/u1 njm2370r/rb1 equivalent circuit v out gnd v in thermal protection bandgap reference noise bypass cont pin function 1. control 2. gnd 3. noise bypass 4. v out 5. v in pin function 1. control 2. gnd 3. nc 4. noise bypass 5. v out 6. nc 7. nc 8. v in njm2370u/u1 njm2370r njm2370rb1 123 4 52 85 1 4 6 7 23
njm2370 -2- ver.2004-08-30 absolute maximum ratings (ta=25 c) parameter symbol ratings unit input voltage v in 20 v control voltage v cont 20(*1) v sot-89 350 power dissipation p d vsp8,tvsp8 320 mw operating temperature range topr ? 40 +85 c storage temperature range ts t g ? 40 +125 c (*1)when input voltage is less than +20v, the absolute maximum control voltage is equal to the input voltage. electrical characteristics (ta=25 c) parameter symbol conditions min. typ. max. unit output voltage vo v in =vo+1v, io=30ma ? 3% ? +3% v quiescent current 1 i q 1 io=0ma,expect i cont ? 180 ? a quiescent current 2 i q 2 control ? gnd short ? ? 100 na output current io (vo ? 0.3v) 150 180 ? ma v in =(vo+1v) (vo+6v) vo=2v to 14v ? ? 0.12 %/v line regulation ? vo/ ? v in v in =(vo+1v) (vo+5v) vo=15v ? ? 0.12 %/v load regulation ? vo/ ? io io=0 60ma ? ? 0.03 %/ma dropout voltage ? v i - o io=30ma ? 0.1 0.3 v ripple rejection rr f=400hz, ein=100mvp-p v in =vo+1.5v, io=10ma ? 60 ? db average temperature coefficient of output voltage ? vo/ ? ta ta = ? 20 75 c, io=10ma v in =vo+1.5v ? 0. 2 ? mv/ c output noise voltage v no 10hz< f < 80khz, io=10ma, vo=3v ? 30 ? vrms the above specification is a common specification for all output voltages. therefore, it may be different from the individual specification for a specific output voltage. test circuit 2370 + v in v in v out control noise bypass gnd + 0. 1 f i in i cont v cont cp 1 0 f i out v out v v a a
njm2370 ver.2004-08-30 -3- typical application 1 in nonuse of on/off control 2370 + v in v out control noise bypass gnd + 0. 1 f cp=0. 1 f 1 0 f v out v in r (0 300k ? ) connect control terminal(1pin) to v in terminal(5pin) when a resistance ?r? is connected, the quiescent current decreases, but minimum operating voltage increases. please refer to a figure of output voltage vs. control voltage. 2 in use of on/off control 2370 + v in v out control noise bypass gnd + 0. 1 f cp=0. 1 f 1 0 f v out v in r when the control terminal is ?h?, it is on. when the control terminal is ?l? or ?open?, it is off. ? noise bypass capacitance cp noise bypass capacitance cp reduces noise generated by band-gap reference circuit. noise level and ripple rejection will be improved when larger cp is used. please refer to the typical characteristics to determine the value. use of smaller cp value may induce oscillation. please make sure to use cp value of greater than 0.1uf to avoid the problem.
njm2370 -4- ver.2004-08-30 package marking 0 5 a 7 0 1 5 4 3 2 1 a1 a2 a3 b1 b2 b3 1234 5 6 7 8 a a3 0 a1 5 a2 7 b1 0 b2 1 b3 j r c output voltage rank list marking marking output voltage part number a1 a2 output voltage part number a1 a2 2.0v njm2370x02 0 2 3.6v njm2370x36 3 6 2.1v njm2370x21 2 1 3.7v njm2370x37 3 7 2.2v njm2370x22 2 2 3.8v njm2370x38 3 8 2.3v njm2370x23 2 3 3.9v njm2370x39 3 9 2.4v njm2370x24 2 4 4.0v njm2370x04 0 4 2.5v njm2370x25 2 5 4.7v njm2370x47 4 7 2.6v njm2370x26 2 6 5.0v njm2370x05 0 5 2.7v njm2370x27 2 7 6.0v njm2370x06 0 6 2.8v njm2370x28 2 8 8.0v njm2370x08 0 8 2.9v njm2370x29 2 9 8.5v njm2370x85 8 5 3.0v njm2370x03 0 3 9.0v njm2370x09 0 9 3.1v njm2370x31 3 1 10.0v njm2370x10 1 0 3.2v njm2370x32 3 2 12.0v njm2370x12 1 2 3.3v njm2370x33 3 3 13.0v njm2370x13 1 3 3.5v njm2370x35 3 5 15.0v njm2370x15 1 5 power dissipation vs. ambient temperature a1,a2 output voltage rank (please refer to output voltage rank list) a3 plant code.(njm2370 is ?a?) b1 last digit of the calendar year b2,b3 lot number 0 50 100 150 200 250 300 350 400 0 25 50 75 100 ambient temperature ta(c) power dissipation p d (mw) vsp8 sot-89(5pin) , tvsp8
njm2370 - 5 - ver.2004-08-30 typical characteristics njm2370u03 / r03 dropout voltage njm2370u03 / r03 load regulation njm2370u03/r03 gnd current vs. output current njm2370u03/r03 dropout voltage vs. output current
njm2370 - 6 - ver.2004-08-30 typical characteristics njm2370u03/r03 output noise voltage vs. noise bypass capacitor njm2370u03/r03 ripple rejection vs. frequency njm2370u03 / r03 control current vs. control voltage njm2370u03 / r03 output voltage vs. control voltage
njm2370 - 7 - ver.2004-08-30 typical characteristics dropout voltage vs. ambient temperature on control voltage vs. temperature thermal shutdown [caution] the specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. the application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. njm2370u03 / r03 control current vs. ambient temperature njm2370u03 / r03 quiescent current 1 vs. ambient temperature
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